Originally Posted by
Sir Bahamut
My point:
R=U is not implied by the game to be true. It lacks substantial, convincing evidence, which it sorely needs considering how bold a claim it is. It also requires a large amount of entirely unfounded and wild assumptions in order to even work to begin with. On top of that, the game itself readily offers a much simpler, more plausible background for Ultimecia far more parsimonious than R=U.
For these reasons, R=U cannot be considered a valid theory. Just because it is possible to conceive of a scenario which results in Rinoa becoming Ultimecia, the fact is that it has no real evidence backing it up, and so is no more valid than say, Squall = a Moomba.